Believe it or not, Russia has not opened its airspace and I would not suggest that you violate it. Putin just miscalculated and thought that Turkey would not do anything in response. It was just another Putin mistake and a tragedy for the families of these pilots. But life will go on. This is not Putin's first screwup.
Why don't you think Putin sacrificed his pilot to set up further justifications for warfare against Turkey?
You're naive.
It sounds like you think Putin is a nut job. I am confident you are wrong. He just made a mistake. It was not his first one.